飞控-77: 74 std flight-controller projects ingested

Topic-pull from local listing index (`name OR introduction` contains
飞控). 77 std hits in oshwhub_listing_full.jsonl, minus 2 already
crawled = 75 attempted; 74 OK + 1 hard fail (`m1_mh743_ada_v4`,
listing entry missing `count.like`).

dev1 walltime: Step 1 ~12s, Step 4 ~80s (concurrency=5).
License mix: 65% GPL 3.0, 11% Public Domain, 11% MIT, 4% CC variants.

3 partial dirs (Step 1 KeyError on missing `count.like`) dropped — to
be re-fetched after a follow-up crawler patch makes count fields
defensive against listing-index outliers.

Source backfill 74/74 OK, total +46 MB.

data/raw/oshwhub/b8ade899f37149e1b562c8f38369fb5a/_urls.json

@@ -0,0 +1,31 @@
+{
+  "detail_url": "https://oshwhub.com/death/naze32-kong-xin-bei-si-zhou",
+  "cover_url": "https://image.lceda.cn/pullimage/QtkDLP51R18k8XvztJS34b1uK1wszn9Y8xzLFOWm.jpeg",
+  "attachments": [
+    {
+      "name": "betaflight_3.2.5_NAZE.hex",
+      "url": "https://image.lceda.cn/attachments/2021/8/CPhKsKgFkwSCS1iGdUsrPFzKSF5GJo58IQfnmcMQ.txt",
+      "original_id": "5b692a97dca745aea1e2dc092c0a28b7"
+    },
+    {
+      "name": "cleanflight_2.5.0_NAZE.hex",
+      "url": "https://image.lceda.cn/attachments/2021/8/wFIgpM75wn75IveR3VDDyPzvFAICYjOjMlYxiL65.txt",
+      "original_id": "12926816c44f45c48a89e6c020047d18"
+    },
+    {
+      "name": "飞机视频.mp4",
+      "url": "https://image.lceda.cn/attachments/2021/8/aZ97qhWkC5KYXljKsBIt7fOBtUv5w9PiRMwVAJvg.mp4",
+      "original_id": "317bc40414f7442785f803d90568b7da"
+    },
+    {
+      "name": "V1.1灯光测试.mp4",
+      "url": "https://image.lceda.cn/attachments/2021/9/VgkM1EmLvUWvHakpmaiOv4JjWzhujN2jkV9TwJri.mp4",
+      "original_id": "2bdfd54606b64679b3492aa83cad363c"
+    },
+    {
+      "name": "配置文件（typec为机头，PPM接收机）.json",
+      "url": "https://image.lceda.cn/attachments/2021/9/tYtak2k0cdavOsyud110EpMHTTnoaqfhNlY71LGn.txt",
+      "original_id": "51227a4ac5374d9f9989d7f11301028d"
+    }
+  ]
+}